Which cancer test involves examining tissue to confirm cancer?

• A. CT scan
• B. Biopsy of tumor
• C. Chest X-ray
• D. Bone marrow biopsy

Answer: (B)

Confirming cancer requires looking at tissue under a microscope to see cancerous cells. A biopsy of a tumor provides a real tissue sample from the suspicious area, which a pathologist examines to determine if cancer is present and to identify its type. Imaging tests like CT scans or chest X‑rays can show a mass, but they don’t reveal the cellular details needed to confirm cancer. A bone marrow biopsy also uses tissue analysis, but it’s used to diagnose certain blood cancers or marrow involvement, not to confirm cancer in a solid tumor site. So the biopsy of the tumor is the direct way to confirm cancer.